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src/system.h
492 строки
11 KB
Paul Eggert
GNU tar 1.12
20 апр 1997, 06:43
20 апр 1997, 06:43
3bc4fa6
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/* System dependent definitions for GNU tar. Copyright (C) 1994, 1995, 1996, 1997 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #if HAVE_CONFIG_H # include <config.h> #endif /* Declare alloca. AIX requires this to be the first thing in the file. */ #if __GNUC__ # define alloca __builtin_alloca #else # if HAVE_ALLOCA_H # include <alloca.h> # else # ifdef _AIX #pragma alloca # else # ifndef alloca char *alloca (); # endif # endif # endif #endif #include <sys/types.h> /* Declare a generic pointer type. */ #if __STDC__ || defined(__TURBOC__) # define voidstar void * #else # define voidstar char * #endif /* Declare ISASCII. */ #include <ctype.h> #if STDC_HEADERS # define ISASCII(Char) 1 #else # ifdef isascii # define ISASCII(Char) isascii (Char) # else # if HAVE_ISASCII # define ISASCII(Char) isascii (Char) # else # define ISASCII(Char) 1 # endif # endif #endif /* Declare string and memory handling routines. Take care that an ANSI string.h and pre-ANSI memory.h might conflict, and that memory.h and strings.h conflict on some systems. */ #if STDC_HEADERS || HAVE_STRING_H # include <string.h> # if !STDC_HEADERS && HAVE_MEMORY_H # include <memory.h> # endif #else # include <strings.h> # ifndef strchr # define strchr index # endif # ifndef strrchr # define strrchr rindex # endif # ifndef memcpy # define memcpy(Dst, Src, Num) bcopy (Src, Dst, Num) # endif # ifndef memcmp # define memcmp(Src1, Src2, Num) bcmp (Src1, Src2, Num) # endif #endif /* Declare errno. */ #include <errno.h> #ifndef errno extern int errno; #endif /* Declare open parameters. */ #if HAVE_FCNTL_H # include <fcntl.h> #else # include <sys/file.h> #endif /* Pick only one of the next three: */ #ifndef O_RDONLY # define O_RDONLY 0 /* only allow read */ #endif #ifndef O_WRONLY # define O_WRONLY 1 /* only allow write */ #endif #ifndef O_RDWR # define O_RDWR 2 /* both are allowed */ #endif /* The rest can be OR-ed in to the above: */ #ifndef O_NDELAY # define O_NDELAY 4 /* don't block on opening devices */ #endif #ifndef O_CREAT # define O_CREAT 8 /* create file if needed */ #endif #ifndef O_EXCL # define O_EXCL 16 /* file cannot already exist */ #endif #ifndef O_TRUNC # define O_TRUNC 32 /* truncate file on open */ #endif #ifndef O_APPEND # define O_APPEND 64 /* always write at end of file */ #endif /* MS-DOG forever, with my love! */ #ifndef O_BINARY # define O_BINARY 0 #endif /* Emulate System V 3-argument open call */ #if EMUL_OPEN3 # define open open3 #endif /* Declare file status routines and bits. */ #include <sys/stat.h> #ifndef S_ISLNK # define lstat stat #endif #if STAT_MACROS_BROKEN # undef S_ISBLK # undef S_ISCHR # undef S_ISDIR # undef S_ISFIFO # undef S_ISLNK # undef S_ISMPB # undef S_ISMPC # undef S_ISNWK # undef S_ISREG # undef S_ISSOCK #endif /* On MSDOS, there are missing things from <sys/stat.h>. */ #if MSDOS # define S_ISUID 0 # define S_ISGID 0 # define S_ISVTX 0 #endif #ifndef S_ISREG /* POSIX.1 stat stuff missing */ # define mode_t unsigned short #endif #if !defined(S_ISBLK) && defined(S_IFBLK) # define S_ISBLK(Mode) (((Mode) & S_IFMT) == S_IFBLK) #endif #if !defined(S_ISCHR) && defined(S_IFCHR) # define S_ISCHR(Mode) (((Mode) & S_IFMT) == S_IFCHR) #endif #if !defined(S_ISDIR) && defined(S_IFDIR) # define S_ISDIR(Mode) (((Mode) & S_IFMT) == S_IFDIR) #endif #if !defined(S_ISREG) && defined(S_IFREG) # define S_ISREG(Mode) (((Mode) & S_IFMT) == S_IFREG) #endif #if !defined(S_ISFIFO) && defined(S_IFIFO) # define S_ISFIFO(Mode) (((Mode) & S_IFMT) == S_IFIFO) #endif #if !defined(S_ISLNK) && defined(S_IFLNK) # define S_ISLNK(Mode) (((Mode) & S_IFMT) == S_IFLNK) #endif #if !defined(S_ISSOCK) && defined(S_IFSOCK) # define S_ISSOCK(Mode) (((Mode) & S_IFMT) == S_IFSOCK) #endif #if !defined(S_ISMPB) && defined(S_IFMPB) /* V7 */ # define S_ISMPB(Mode) (((Mode) & S_IFMT) == S_IFMPB) # define S_ISMPC(Mode) (((Mode) & S_IFMT) == S_IFMPC) #endif #if !defined(S_ISNWK) && defined(S_IFNWK) /* HP/UX */ # define S_ISNWK(Mode) (((Mode) & S_IFMT) == S_IFNWK) #endif #if !HAVE_MKFIFO # define mkfifo(Path, Mode) (mknod (Path, (Mode) | S_IFIFO, 0)) #endif #if !defined(S_ISCTG) && defined(S_IFCTG) /* contiguous file */ # define S_ISCTG(Mode) (((Mode) & S_IFMT) == S_IFCTG) #endif #if !defined(S_ISVTX) # define S_ISVTX 0001000 #endif #ifndef _POSIX_SOURCE # include <sys/param.h> #endif /* Include <unistd.h> before any preprocessor test of _POSIX_VERSION. */ #if HAVE_UNISTD_H # include <unistd.h> #endif /* Declare make device, major and minor. Since major is a function on SVR4, we have to resort to GOT_MAJOR instead of just testing if major is #define'd. */ #if MAJOR_IN_MKDEV # include <sys/mkdev.h> # define GOT_MAJOR #endif #if MAJOR_IN_SYSMACROS # include <sys/sysmacros.h> # define GOT_MAJOR #endif /* Some <sys/types.h> defines the macros. */ #ifdef major # define GOT_MAJOR #endif #ifndef GOT_MAJOR # if MSDOS # define major(Device) (Device) # define minor(Device) (Device) # define makedev(Major, Minor) (((Major) << 8) | (Minor)) # define GOT_MAJOR # endif #endif /* For HP-UX before HP-UX 8, major/minor are not in <sys/sysmacros.h>. */ #ifndef GOT_MAJOR # if defined(hpux) || defined(__hpux__) || defined(__hpux) # include <sys/mknod.h> # define GOT_MAJOR # endif #endif #ifndef GOT_MAJOR # define major(Device) (((Device) >> 8) & 0xff) # define minor(Device) ((Device) & 0xff) # define makedev(Major, Minor) (((Major) << 8) | (Minor)) #endif #undef GOT_MAJOR /* Declare directory reading routines and structures. */ #if __TURBOC__ # include "msd_dir.h" # define NAMLEN(dirent) ((dirent)->d_namlen) #else # if HAVE_DIRENT_H # include <dirent.h> # define NAMLEN(dirent) (strlen((dirent)->d_name)) # else # define dirent direct # define NAMLEN(dirent) ((dirent)->d_namlen) # if HAVE_SYS_NDIR_H # include <sys/ndir.h> # endif # if HAVE_SYS_DIR_H # include <sys/dir.h> # endif # if HAVE_NDIR_H # include <ndir.h> # endif # endif #endif /* Declare wait status. */ #if HAVE_SYS_WAIT_H # include <sys/wait.h> #endif #if HAVE_UNION_WAIT # define WAIT_T union wait # ifndef WTERMSIG # define WTERMSIG(Status) ((Status).w_termsig) # endif # ifndef WCOREDUMP # define WCOREDUMP(Status) ((Status).w_coredump) # endif # ifndef WEXITSTATUS # define WEXITSTATUS(Status) ((Status).w_retcode) # endif #else # define WAIT_T int # ifndef WTERMSIG # define WTERMSIG(Status) ((Status) & 0x7f) # endif # ifndef WCOREDUMP # define WCOREDUMP(Status) ((Status) & 0x80) # endif # ifndef WEXITSTATUS # define WEXITSTATUS(Status) (((Status) >> 8) & 0xff) # endif #endif #ifndef WIFSTOPPED # define WIFSTOPPED(Status) (WTERMSIG(Status) == 0x7f) #endif #ifndef WIFSIGNALED # define WIFSIGNALED(Status) (WTERMSIG(Status) != 0) #endif #ifndef WIFEXITED # define WIFEXITED(Status) (WTERMSIG(Status) == 0) #endif /* FIXME: It is wrong to use BLOCKSIZE for buffers when the logical block size is greater than 512 bytes; so ST_BLKSIZE code below, in preparation for some cleanup in this area, later. */ /* Get or fake the disk device blocksize. Usually defined by sys/param.h (if at all). */ #if !defined(DEV_BSIZE) && defined(BSIZE) # define DEV_BSIZE BSIZE #endif #if !defined(DEV_BSIZE) && defined(BBSIZE) /* SGI */ # define DEV_BSIZE BBSIZE #endif #ifndef DEV_BSIZE # define DEV_BSIZE 4096 #endif /* Extract or fake data from a `struct stat'. ST_BLKSIZE gives the optimal I/O blocksize for the file, in bytes. Some systems, like Sequents, return st_blksize of 0 on pipes. */ #if !HAVE_ST_BLKSIZE # define ST_BLKSIZE(Statbuf) DEV_BSIZE #else # define ST_BLKSIZE(Statbuf) \ ((Statbuf).st_blksize > 0 ? (Statbuf).st_blksize : DEV_BSIZE) #endif /* Extract or fake data from a `struct stat'. ST_NBLOCKS gives the number of 512-byte blocks in the file (including indirect blocks). fileblocks.c uses BSIZE. HP-UX counts st_blocks in 1024-byte units, this loses when mixing HP-UX and BSD filesystems with NFS. AIX PS/2 counts st_blocks in 4K units. */ #if !HAVE_ST_BLOCKS # if defined(_POSIX_SOURCE) || !defined(BSIZE) # define ST_NBLOCKS(Statbuf) (((Statbuf).st_size + 512 - 1) / 512) # else # define ST_NBLOCKS(Statbuf) (st_blocks ((Statbuf).st_size)) # endif #else # if defined(hpux) || defined(__hpux__) || defined(__hpux) # define ST_NBLOCKS(Statbuf) ((Statbuf).st_blocks * 2) # else # if defined(_AIX) && defined(_I386) # define ST_NBLOCKS(Statbuf) ((Statbuf).st_blocks * 8) # else # define ST_NBLOCKS(Statbuf) ((Statbuf).st_blocks) # endif # endif #endif /* This is a real challenge to properly get MTIO* symbols :-(. ISC uses <sys/gentape.h>. SCO and BSDi uses <sys/tape.h>; BSDi also requires <sys/tprintf.h> and <sys/device.h> for defining tp_dev and tpr_t. It seems that the rest use <sys/mtio.h>, which itself requires other files, depending on systems. Pyramid defines _IOW in <sgtty.h>, for example. */ #if HAVE_SYS_GENTAPE_H # include <sys/gentape.h> #else # if HAVE_SYS_TAPE_H # if HAVE_SYS_DEVICE_H # include <sys/device.h> # endif # if HAVE_SYS_BUF_H # include <sys/buf.h> # endif # if HAVE_SYS_TPRINTF_H # include <sys/tprintf.h> # endif # include <sys/tape.h> # else # if HAVE_SYS_MTIO_H # include <sys/ioctl.h> # if HAVE_SGTTY_H # include <sgtty.h> # endif # if HAVE_SYS_IO_TRIOCTL_H # include <sys/io/trioctl.h> # endif # include <sys/mtio.h> # endif # endif #endif /* Declare standard functions. */ #if STDC_HEADERS # include <stdlib.h> #else voidstar malloc (); voidstar realloc (); # if HAVE_GETCWD char *getcwd (); # endif char *getenv (); #endif #include <stdio.h> #ifndef _POSIX_VERSION # if MSDOS # include <io.h> # else off_t lseek (); # endif #endif #include <pathmax.h> #if WITH_DMALLOC # undef HAVE_VALLOC # define DMALLOC_FUNC_CHECK # include <dmalloc.h> #endif /* Prototypes for external functions. */ #ifndef PARAMS # if PROTOTYPES # define PARAMS(Args) Args # else # define PARAMS(Args) () # endif #endif #if HAVE_LOCALE_H # include <locale.h> #endif #if !HAVE_SETLOCALE # define setlocale(Category, Locale) #endif #if ENABLE_NLS # include <libintl.h> # define _(Text) gettext (Text) #else # define bindtextdomain(Domain, Directory) # define textdomain(Domain) # define _(Text) Text #endif #define N_(Text) Text /* Library modules. */ #include "error.h" #if !HAVE_STRSTR char *strstr PARAMS ((const char *, const char *)); #endif #if HAVE_VALLOC # ifndef valloc voidstar valloc PARAMS ((size_t)); # endif #else # define valloc(Size) malloc (Size) #endif voidstar xmalloc PARAMS ((size_t)); voidstar xrealloc PARAMS ((voidstar, size_t)); char *xstrdup PARAMS ((const char *));